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All Journal Jurnal Ilmu Perairan (Aquatic Science) Journal of Coastal and Ocean Sciences
Simangunsong, Gusnar
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Immunology & microbiology Physics

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Analysis of Environmental Conditions in Red-Eyed Snail Silvofishery in Buruk Bakul Village Simangunsong, Gusnar; Budijono, Budijono; Fauzi, Muhammad
Journal of Coastal and Ocean Sciences Vol. 6 No. 2 (2025): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.6.2.102-107

Abstract

Buruk Bakul Village has a mangrove distribution covering approximately 168 hectares. However, coastal abrasion, which reaches an average of 4 meters per year, directly impacts biodiversity, including a decline in gastropod populations due to loss of shelter and food sources. One affected species is the red-eyed snail (Cerithidea obtusa), which plays a vital role in the food chain of coastal ecosystems. This study aims to determine the practice of silvofishery on C. obtusa and environmental quality, as well as changes in environmental quality due to silvofishery practices. Sampling technique: Sampling was done using the stratified random sampling method. The results showed that Silvofishery practices integrating mangrove conservation with red-eyed snail cultivation in Buruk Bakul Village showed varying results depending on environmental conditions. Plot 3 recorded the best growth with a length of 1.22 cm and a weight of 1.91 g, which was supported by the fine mud substrate and high organic matter content. In contrast, plot 1 showed the lowest results with a length of 0.77 cm and a weight of 0.48 g. Environmental conditions such as soil pH, temperature, and organic matter significantly influence snail growth, with soil pH and temperature as the dominant factors.
Morfometrik Meristik dan Identifikasi Jenis Ikan Alu-alu (Sphyraena spp) dari Perairan Sibolga Simangunsong, Gusnar; Windarti, Windarti; Putra, Ridwan
Ilmu Perairan (Aquatic Science) Vol. 11 No. 3 (2023): November
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Ikan alu-alu (Sphyraena spp) merupakan jenis ikan yang memiliki ciri khas bentuk tubuh yang memanjang, bergigi taring, rahang atas yang panjang dan ditutupi dengan sisik-sisik halus yang berbentuk sikloid. Terdapat berbagai jenis ikan Sphyraena namun belum ada informasi mengenai jenis ikan yang terdapat di daerah penelitian. Tujuan dari penelitian ini adalah untuk mengetahui spesies, ciri-ciri meristik dan morfometrik ikan alu-alu yang terdapat di Kota Sibolga. Penelitian ini dilakukan pada bulan Mei-Juli 2022. Metode yang digunakan dalam penelitian ini adalah metode survei dan pengambilan sampel dilakukan sebanyak 3 kali dalam 3 bulan, satu kali per bulan. Hasil penelitian menunjukkan bahwa terdapat 2 spesies ikan barakuda, yaitu S. putnamae dan S.obtusata. Warna tubuh S. putnamae berwarna keabu-abuan, dan ujung sirip punggung sejajar dengan ujung sirip dada. Sedangkan S. obtusata berwarna kekuningan dengan ujung sirip punggung sejajar dengan ujung anterior sirip perut. Pada bagian mulut, ikan S. putnamae memiliki mulut yang lebih panjang dan lebih tajam dibandingkan dengan ikan S. obtusata. Ukuran ikan S. putnamae lebih besar daripada S. obtusata, masing-masing 158-397 dan 165-255 TL.
Co-Authors Budijono, Budijono Muhammad Fauzi Putra, Ridwan Windarti Windarti